AN2841 Freescale Semiconductor / Motorola, AN2841 Datasheet - Page 19

Manufacturer Part Number

AN2841

Description

Using the Hall Decoder (HD) eTPU Function

Manufacturer

Freescale Semiconductor / Motorola

Datasheet

1.AN2841.pdf (24 pages)

5.1.1

/* initialize the HD function */

err_code = fs_etpu_hd_init_3ph120 (

/* enable the HD function */

fs_etpu_hd_enable_3ph(

/* enable commutations by HD signals */

fs_etpu_hd_set_commut_on(HD0_PHASEA);

fs_etpu_hd_set_commut_on(HD0_PHASEB);

fs_etpu_hd_set_commut_on(HD0_PHASEC);

This application note provides the user with a description of the Hall Decoder (HD) eTPU function usage

and examples. The simple C interface routines to the HD eTPU function enable easy implementation of

the HD in applications. The demo application is targeted at the MCF523x family of devices, but it could

be easily reused with any device that has an eTPU.

Freescale Semiconductor

FS_ETPU_HD_DIRECTION_AUTO_ON, /*direction_on_off: direction is calculated */

HD0_PHASEA, /* engine: A; channel: 0 */

HD0_PHASEB, /* engine: A; channel: 1 */

HD0_PHASEC, /* engine: A; channel: 2 */

FS_ETPU_TCR1, /* timer: TCR1 */

FS_ETPU_HD_REV_COUNTING_ON, /*revolution_on_off: revolutions are counted*/

FS_ETPU_HD_DIRECTION_INC, /* direction: initial direction INC */

&phaseA_commut_cmds,

&phaseB_commut_cmds,

&phaseC_commut_cmds); /* phaseC Commutation Table address */

HD0_PHASEA, /* engine: A; channel: 0 */

HD0_PHASEB, /* engine: A; channel: 1 */

HD0_PHASEC, /* engine: A; channel: 2 */

FS_ETPU_PRIORITY_MIDDLE); /* priority: Middle */

Summary and Conclusions

Function Calls

/* phaseA Commutation Table address */

/* phaseB Commutation Table address */

Using the Hall Decoder (HD) eTPU Function, Rev. 0

Summary and Conclusions